BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 222 55.4%
2 United States 105 26.2%
3 Germany 31 7.7%
4 Taiwan 20 5%
5 Singapore 5 1.2%
6 Hong Kong 4 1%
7 Japan 3 0.7%
8 Russia 3 0.7%
9 United Kingdom 3 0.7%
10 1 0.2%
11 Switzerland 1 0.2%
12 Moldova, Republic of 1 0.2%
13 Netherlands 1 0.2%
14 Romania 1 0.2%